1600, (w), The Jerusalem Delivered of Tasso, XII, lxvii:
With trembling hands her beaver he untied, / Which done, he saw, and seeing knew her face.
1819, (w), (w):
Without alighting from his horse, the conqueror called for a bowl of wine, and opening the beaver, or lower part of his helmet, announced that he quaffed it, “To all true English hearts, and to the confusion of foreign tyrants.”
1974, (w), (w), Faber & Faber 1992, p.128:
As each one brings a little of himself to what he sees you brought the trappings of your historic preoccupations, so that Monsieur flattered you by presenting himself with beaver up like Hamlet's father's ghost!